diff options
| author | Jesse Barnes | 2013-05-02 19:48:08 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2013-05-10 21:56:28 +0200 |
| commit | 2445966ee80837116498bd83084ad6d28272320c (patch) | |
| tree | bbc3feac9d574cc42d6711cfc30883f64c306b92 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915: read current freq from Punit on VLV (diff) | |
| download | kernel-qcow2-linux-2445966ee80837116498bd83084ad6d28272320c.tar.gz kernel-qcow2-linux-2445966ee80837116498bd83084ad6d28272320c.tar.xz kernel-qcow2-linux-2445966ee80837116498bd83084ad6d28272320c.zip | |
drm/i915: go back to switch for VLV mem freq detection v2
Both the docs and the existing code were wrong. So fix both and use a
switch statement like we do elsewhere to make things simple & clear.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0f4b46e94932..556b9892bb92 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2902,7 +2902,18 @@ static void valleyview_enable_rps(struct drm_device *dev) GEN7_RC_CTL_TO_MODE); valleyview_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS, &val); - dev_priv->mem_freq = 800 + (266 * (val >> 6) & 3); + switch ((val >> 6) & 3) { + case 0: + case 1: + dev_priv->mem_freq = 800; + break; + case 2: + dev_priv->mem_freq = 1066; + break; + case 3: + dev_priv->mem_freq = 1333; + break; + } DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq); DRM_DEBUG_DRIVER("GPLL enabled? %s\n", val & 0x10 ? "yes" : "no"); |